351W Headers only???
Postmaster
Joined: Dec 2007
Posts: 3,052
Likes: 1
From: Jacksonville FL
Wont hurt it. I ran my 86 with open long tubes for 6 months. I got pulled over for something else twice and the cops didn't say anything about the exhaust.... lol
Gets annoying though.
Why are you not going to finish the exhaust? My excuse was I didn't have the money at the time.
Gets annoying though.
Why are you not going to finish the exhaust? My excuse was I didn't have the money at the time.
Thread Starter
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Freshman User
Joined: Aug 2010
Posts: 36
Likes: 0
Thx to all.
Do plan to finish the ex, just wanted to see if there was a step-by-step approach that wouldn't hurt the 351. $
Just need the longtubes, then either y or extra cat. have two muff assemblies that fit the f250.
Do plan to finish the ex, just wanted to see if there was a step-by-step approach that wouldn't hurt the 351. $
Just need the longtubes, then either y or extra cat. have two muff assemblies that fit the f250.
Senior User
Joined: May 2009
Posts: 359
Likes: 0
From: Moyock
no experience with LT's yet but i have heard nothin but good thinks about horsepower and torque increase... also flowtech are probly the worst fitting LT's, so i would avoid those even though there super cheap
Postmaster
Joined: Dec 2007
Posts: 3,052
Likes: 1
From: Jacksonville FL
Actually I ran flowtechs in my 86 and they fit perfect.. I was surprised for how cheap they were. I would deff recommend a GOOD high heat paint for them though.
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Junior User
Joined: Jan 2011
Posts: 67
Likes: 0
This is just spreading a HUGE myth, it's the lack of proper scavenging that causes burt valves.
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FTE Legend
Joined: Jun 2006
Posts: 31,930
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From: Ottawa, Ontario
This is something that did happen on old carbed engines because they have no way to compensate for changes in airflow through the motor.. the carb has to be rejetted manually. But this simply won't happen on an EFI motor as long as the O2 sensor is installed at the header collector and is electrically connected.
Senior User
Joined: May 2009
Posts: 359
Likes: 0
From: Moyock
when though? supposably the old flowtech fit good and the new ones suck. a few people on here had to torch theres to get them to fit
Cargo Master
Joined: Oct 2008
Posts: 2,308
Likes: 1
From: Elyria, OH
I know i did! This was last year sometime. Finish still looks good though